/Engine/Source/Runtime/MovieScene/Public/EntitySystem/MovieSceneEntitySystem.h
namespace UE { namespace MovieScene { enum EEntitySystemCategory { None = 0, Unspecified = 1u << 0, Core = 1u << 1, ChannelEvaluators = 1u << 2, BlenderSystems = 1u << 3, PropertySystems = 1u << 4, Custom = 1u << 5, Last = 1u << 31, All = ~0u, } } }